work-in-progress patch to fix context lost black video

content/renderer/media/android/stream_texture_factory.h

Index: content/renderer/media/android/stream_texture_factory.h
diff --git a/content/renderer/media/android/stream_texture_factory.h b/content/renderer/media/android/stream_texture_factory.h
index 70d31e9391a8c2ac760ae5b2559866f30869093f..26d0a064c2b30d7f6078305d6e5160b444ed35b7 100644
--- a/content/renderer/media/android/stream_texture_factory.h
+++ b/content/renderer/media/android/stream_texture_factory.h
@@ -44,6 +44,12 @@ class StreamTextureProxy {
 typedef scoped_ptr<StreamTextureProxy, StreamTextureProxy::Deleter>
     ScopedStreamTextureProxy;
 
+class StreamTextureFactoryContextObserver {
+ public:
+  ~StreamTextureFactoryContextObserver() {}
+  virtual void ResetStreamTextureProxy() = 0;
+};
+
 // Factory class for managing stream textures.
 class StreamTextureFactory : public base::RefCounted<StreamTextureFactory> {
  public:
@@ -69,6 +75,9 @@ class StreamTextureFactory : public base::RefCounted<StreamTextureFactory> {
 
   virtual gpu::gles2::GLES2Interface* ContextGL() = 0;
 
+  virtual void AddObserver(StreamTextureFactoryContextObserver* obs) = 0;
+  virtual void RemoveObserver(StreamTextureFactoryContextObserver* obs) = 0;
+
  protected:
   friend class base::RefCounted<StreamTextureFactory>;
   virtual ~StreamTextureFactory() {}